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Finding the Fourth Proportional to 101,073.28, 139,481.64 and 55,752.88

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Solution

The fourth proportional to 101,073.28, 139,481.64 and 55,752.88 is: 76,939.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,073.28 : 139,481.64 = 55,752.88 : x
  2. Step 2: Convert to fraction form
    101,073.28/139,481.64 = 55,752.88/x
  3. Step 3: Cross multiply
    101,073.28x = 139,481.64 × 55,752.88
  4. Step 4: Simplify right side
    101,073.28x = 7,776,503,137.12
  5. Step 5: Solve for x
    x = 7,776,503,137.12/101,073.28
  6. Step 6: Final answer
    x = 76,939.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.